12121110101023 has 64 divisors (see below), whose sum is σ = 15913565337600. Its totient is φ = 8951638671360.

The previous prime is 12121110101021. The next prime is 12121110101083. The reversal of 12121110101023 is 32010101112121.

It is a happy number.

12121110101023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12121110101023 - 2¹ = 12121110101021 is a prime.

It is a super-2 number, since 2×12121110101023² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12121110100988 and 12121110101006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121110101021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 826300533 + ... + 826315201.

It is an arithmetic number, because the mean of its divisors is an integer number (248649458400).

Almost surely, 2^{12121110101023} is an apocalyptic number.

12121110101023 is a deficient number, since it is larger than the sum of its proper divisors (3792455236577).

12121110101023 is a wasteful number, since it uses less digits than its factorization.

12121110101023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18952.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12121110101023 its reverse (32010101112121), we get a palindrome (44131211213144).

The spelling of 12121110101023 in words is "twelve trillion, one hundred twenty-one billion, one hundred ten million, one hundred one thousand, twenty-three".